Wall construction.



A. W. CORDES.

WALL CONSTRUCTION.

APPLICATION FILED OCT. llI 1915.

1,31,?1 1 n Patented July 3, 1917.

A TTOR/VEVS a citizen of the United county, and State of an swarms PATENT clarion.

AUGUST W. CORDES, OF NEW YORK,

WALL CONSTRUCTION.

To all whom it may concern."

Be it known that I, AUcusTW. Coanns,

States, and a resident of the borough of Manhattan, city, vented certain new and useful Improvements in Wall Construction, of which the follow- ,ing is a specification.

y invention relates to a form of wall construction particularly adapted for parapet walls and designed to bring about more perfect results than have heretofore been accomplished in connection with the employnection with walls composed of bricks or the like cemented together so as to form a straight line ofcement, or Walls formed of concrete or c'da-lescent material.

I have found that one of the main defects .of the customary methods of endeavoring to protect the edge results from a combination of activities on the part of forces of nature and that to propcrly meet and counteract such forces a reconstruction or a rearrangement is required with respect to those means which cooperate with the edge of the roofing material to protect it. It has been customary to make cap or counter flashings of metal strips bent at right angles, one part of the strip being built in a horizontal direction into the mortar joint of the brick work while the other part of the strip hangs down to form a cap to cover the edge of the roofing material which has been turned up from the roof against the walls and under said counter flashing. In concrete walls a cut or recess is built or formed, and into this recess the edge of the roofing by calking. In these constructions I find that atthe point where the cap flashing enters the wall, water is apt to seep back into the wall and by the action of frost and expansion and contraction, to loosen the cap and require repairs, or that snow and draft is blown under the open joint between the roof and the flashing, thereby enabling moisture to enter the building. So far as concrete walls are concerned, the action of'the' Specification of Letters Patent. v

New York, have in- The invention is more particularly adapted for use in conof the roofing material is turned and made tight Patented July 3, 191?.

Application filed October 21, 1915. Serial No. 57,052.

advantages of existing structures, 1 so fash ion the counter flashing or so incorporate it in the coalescent material that its upper face is elevated within the coalescent material above the point where the cap projects from the Wall face. In other Words at some point in the interior of the wall the top line of the flashing is higher than it is at the face of the wall. Any water, whether in the form of liquid or snow, whether tending to seep or to be blown against the wall, will thus be met with a substantial resistance tending to eject the water from the wall, so that even should some penetration occur it cannot overcome to any material extent the automatic action of the metal due to its special shape in the wall in supplying an easier means of egress of the water out of the wall than any means by which the water can enter the wall. Expansion, the heat of the sun and other forces playing upon my type of wall construction no longer assist as means to inflict injury, but are converted into positive forces to aid in keeping the moisture out. Other details of the 1 ed with the development of the idea above described are to be found in the combination with the means for forming a specially strong key. with the mortar and, where concrete walls are dealt with, in so arranging the metal of the flashing that a-closed pocket will;be formed in the concrete. lln both cases, that'is walls of brick or concrete, that part of the metal extending from the wall is bent back inwardly upon itself so as to adapt it to form a locked joint with the edge of the roofing material when bent back in outward direction. Other details relating to the development of the invention will appear from the specification.

The invention is illustrated in the drawings in w ich through a. wall composedof brick, showing the initial position of the cap flashing.

- Fig. 2 is a similar section showing the final finished position of flashing and roofing material.

Figs. 3, 4 and 5 illustrate in perspective details relating to special forms of metal flashing. 4

Fig. 6 is a vertical section through a section wall showing the manner in which the metal flashing isincorporated therein.

Fig; 7 is a similar view through an adjacent portion of'the wall and flashing ofFig. 6, with the flashing and roofing material in final finished shape. I

- Fig. 8 is a sectional View taken on line 8-8 of Fig. 6.

Fig. 9 is a detail of themetal flashing, the forward part being broken off.

Figs. 10 and 11 are vertical sectional views showing a modified form of structure.

In the drawings 1 represents a cap flashing. This element is generally constructed in strips approximately siX feet in length. \Vhere two of such strips 1 adjoin, it is advisable to use a key such as shown at 2 in T ig. 3'.

Vhen the courses'of brick 3 have reached the proper height, the strips 1" are placed" thereon as shown in Fig. 1, in which position they are self supporting In the particular embodiment shown in Figs. 1 and 3, the strip 1 is formed in a slanting direction, being supported in this position by the bent edge 4 which is integrally fashioned with the strip 1. In Fig. 4, the inner part of the strip has a configuration, in which a downwardly bent flange 5 alternates with the projection 6, the flanges 5 serving to support the strip while the flanges 5 and 6,.like the flange 4 of Fig. 1, tend to anchor the strips firmly in the mortar joint. In, Fig. 5, the downwardly projecting flanges 5 serve the same purposes as the flanges 5 of Fig. 4.-. In this type of construction illustrated in Figs. 3 and 4, the mortar can readily enter beneath the inclined surfaceof the strip 1. The apertures 7 of Figs. 4

v and 5 may be used for the purpose of inserting a nail or pin at appropriate dis tances apart to aid in supporting the strip in its initial position. After these strips have been properlyplaced the mortar joint is formed and the upper courses of the brick are continued to complete the wall. -The outer end of the strip is fashioned into the form of a hook 8, which projects from the face of the wall. The strips being made of soft metal enables the hooks 8 to be bent into the dotted position of Fig. 1,;which enables them to pass over the projecting edge 9 which is formed in the roofing material 10. The two parts are then hammered down until they assume the position shown in Fig. 2. Where the two hooks, 9 of the roof flashing, and 8 of the cap flashing, come together, some asphaltic cement, or some plastic asphaltum, or wax or some other suitable substance may be introduced as the hooks are folded together in order'to make the'joint more perfectly water-tight. r

- When the invention is employed in constructi'ng concrete walls I use the device as illustrated in Figs. 6, 7 and 8.- In this case the strips 1- are folded as shown, the metal being bent upon itself at the inner portion as more clearly shown in 'Fig. 9,

while the hook 8 lies flat against the face of the apron 11 of the strip which in itself terminates in the rearwardly extending projection 12. The strip 1 bent in this fashion is an irregularly shaped tube' forming a closed pocket into the lnterior of which cement cannot enter while the projections 5,

to the form by the nails 15. After the cement has set,, the forms 14 are removed, leaving the brackets 13 and the nails 15 together with the strip 1 permanently in a place in the wall. The points of the nails are clipped off or hammered down. The hook 8 of the strip 1. may then be bent in an outwardly direction as indicated by dotted lines in Fig. 7, leaving a recess or pocket in the face of the wall. The hook 8 is then united with the roof flashing as described in connection with the brick'wall's and when hammered down, the entire structure takes the position shown in Fig. 7. The bracket 13 may be formed in many differentways to answer the same Purpose. By shaping it as shown this permits the concrete to 'runall around the bracket which anchors it 'very firmly.

Additional anchoring means such as the apertures 17 may also be em- .ployed to let the concrete bond through and hook 8 is in some cases bent rather close together in the initial construction of the strip which makes it necessary subsequently, when "the hookisobent so as'to project from the wall, to open the hook itselfin order to have it accommodate the bent edge of the roof flashing.- FigsnlO and 11 show varia-.. tions in the construction of the strip 1. In these two figures, the strip 1. is composed of resilient material. By inserting the hook shaped end of the roof flashing 18 into the pocket and beneath the edge of the hook 8, the edge of the hook 8 snaps back and enters into locking engagement with the hook '18. Many variations in form and detail may be employed, it being important, however, to observe the direction in each case that the point where the strip 1 pro- '-jects from the wall shall be lower than some other part of the strip permanently incorporated and held in place in the cementitious material.

ing, one part of which is embedded in the wall in an upwardly slanting position, means for maintaining the said elevated part in predetermined slanting position during the building up of the wall, the inner portion of the cap terminating in an apron to form a c10sed pocket with the forward end of the cap to prevent the entry of liquid cementitious material, the projecting part of the cap being bent back upon itself to form a hook adapted to engage and form a joint with the edgeof the roofing material.

, 2.- A wall construction comprising as an integral part thereof a series ,of strips placed edge to edge, a key between the same, said strips constituting 'a cap or counter flash- -ing, one part of which isembedded in the wall in 'an upwardly slanting position,

means within said wall for maintaining the I said slanting part in predetermined position during the building up of the wall, one edge of said cap being bent back upon itself to form a hook adapted to engage and form a joint with the edge of the roofing material.

3. The combination of a wall, a member embedded in said wall and forming a tubular pocket therein, a resilient flange extending longitudinally along an outer edge of said member to longitudinally close the outer opening thereof, a sheet of material adapted to be inserted into said pocket against the tension of said member and a flange on said sheet of material adapted to hook behind the flange of said pocket forming member, whereby withdrawal of'said sheet of material'from said pocket is resisted.

' 4;. The combination of a wall, a capor counter flashing extending into and secured in said wall, a sheet of material, and hooks located respectively on said cap or counter flashing and on said sheet of material at opposed edges thereof, said hooks belng interlocked with each other to resist separation of said sheet of material and said cap or counter flashing from each other.

In testimony whereof I have hereunto set In hand.

y AUGUSTW; CORDES. 

